Bio Chemistry Question:

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Which type of chemical bond maintains the pairing of each chain in the DNA molecule?

Bio Chemistry Interview Question
Bio Chemistry Interview Question

Answer:

To form the DNA molecule, purine bases bind to pyrimidine bases by intermolecular bonds called hydrogen bonds. Hydrogen bonds occur when there is hydrogen near one of these electronegative elements: fluorine, oxygen, or nitrogen.

In such conditions hydrogen looks like having, lost electron for those elements and a very strong polarization is created. The highly positive hydrogen attracts pairs of electrons of other molecules making a hydrogen bond.

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What is the numeric relation between pyrimidine and purine bases in the DNA molecule? Is that relation valid in RNA molecules?What is the name of the DNA duplication process? What is the main enzyme that participates in it?